var dispatchEvent = function(node, event, params) {
  var disabledDesc,
    disabledChanged,
    disabledFix;

  if (node.disabled &&
      (disabledDesc = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(node), 'disabled')) &&
      disabledDesc.set && disabledDesc.get &&
      !Object.getOwnPropertyDescriptor(node, 'disabled')) {
    disabledFix = true;
    node.disabled = false;
    Object.defineProperty(node, 'disabled', {
      enumerable: true,
      configurable: true,
      set: function(val) {
        disabledChanged = true;
        return disabledDesc.set.call(this, val);
      },
      get: disabledDesc.get
    });
  } else {
    disabledDesc = null;
  }

  event = new window[params.type || 'CustomEvent'](event, params.options);

  node.dispatchEvent(event);

  if (disabledFix) {
    delete node.disabled;
    if (!disabledChanged) {
      node.disabled = true;
    }
  }
};